A heavy point requires heavy fletching as an offset. Otherwise, the arrow will tend to nose dive. Common belief is a "front of center" balancing point in the range of 7 - 15 % of the overall arrow length is ideal for accuracy. See the following information on Gold Tip's website.


https://www.goldtip.com/calculatorcontent.aspx?coid=3


That being said, I shoot a 100 grain BH with 2" Blazers and do fine. I also have an arrow wrap under the fletch.